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Benz[a]anthracene, Triphenylene, and Chrysene on Rxi-PAH After Repeated Matrix Injections

ColumnRxi-PAH, 40 m, 0.18 mm ID, 0.07 µm (cat.# 49316)
SampleCustom PAH standard
Inj. Vol.:0.5 µL pulsed splitless
Liner:Premium 2 mm single taper w/wool (cat.# 23316.1)
Inj. Temp.:275 °C
Pulse Pressure:80 psi (551.6kPa)
Pulse Time:0.6 min
Purge Flow:40 mL/min
Oven Temp.:110 °C (hold 1 min) to 210 °C at 35 °C/min to 260 °C at 3 °C/min to 350 °C at 10 °C/min (hold 4.5 min)
Carrier GasHe, constant flow
Flow Rate:1.4 mL/min
DetectorFID @ 360 °C
Make-up Gas Flow Rate:45 mL/min
Make-up Gas Type:N2
Hydrogen flow:40 mL/min
Air flow:450 mL/min
InstrumentAgilent 7890A GC
NotesThe experiment was carried out as follows:

- Oysters and paprika were extracted using QuEChERS methodology.
- dSPE cleanup was performed on oyster extracts.
- Cartridge cleanup was performed on paprika extracts.
- Oyster and paprika extracts were injected, interspersed with solvent standard, to monitor performance.

1 m was trimmed from the column and the liner was changed during the course of the experiment.